[Solved] NTA JEE Main 23rd April 2013 Online - Chemistry Paper with Solutions

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 31

Number of atoms in the following samples of substances is largest in:

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 32

The de Broglie wavelength of a car of mass 1000 kg and velocity 36 km/hr is :

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 33

Which is the correct order of second ionization potential of C, N, O and F in the following?

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 34

The shape of $$IF_6^-$$ is :

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 35

Bond distance in HF is $$9.17 \times 10^{-11}$$ m. Dipole moment of HF is $$6.104 \times 10^{-30}$$ Cm. The percentage ionic character in HF will be : (electron charge = $$1.60 \times 10^{-19}$$ C)

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 36

The correct order of viscosity of the following liquids will be :

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 37

Which of the following statements/relationships is not correct in thermodynamic changes?

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 38

(1) $$N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)$$, $$K_1$$
(2) $$N_2(g) + O_2(g) \rightleftharpoons 2NO(g)$$, $$K_2$$
(3) $$H_2(g) + \frac{1}{2}O_2(g) \rightleftharpoons H_2O(g)$$, $$K_3$$
The equation for the equilibrium constant of the reaction $$2NH_3(g) + \frac{5}{2}O_2(g) \rightleftharpoons 2NO(g) + 3H_2O(g)$$, $$(K_4)$$ in terms of $$K_1$$, $$K_2$$ and $$K_3$$ is :

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 39

What is the pH of a $$10^{-4}$$ M OH$$^-$$ solution at 330 K, if $$K_w$$ at 330 K is $$10^{-13.6}$$?

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 40

The numbers of protons, electrons and neutrons in a molecule of heavy water are respectively :

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 41

Equimolar solutions of the following compounds are prepared separately in water. Which will have the lowest pH value?

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 42

Monocarboxylic acids are functional isomers of:

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 43

In a face centred cubic lattice, atoms of A form the corner points and atoms of B form the face centred points. If two atoms of A are missing from the corner points, the formula of the ionic compound is :

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 44

Vapour pressure of pure benzene is 119 torr and that of toluene is 37.0 torr at the same temperature. Mole fraction of toluene in vapour phase which is in equilibrium with a solution of benzene and toluene having a mole fraction of toluene 0.50, will be :

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 45

Given :
$$E^\circ_{\frac{1}{2}Cl_2/Cl^-} = 1.36$$ V, $$E^\circ_{Cr^{3+}/Cr} = -0.74$$ V
$$E^\circ_{Cr_2O_7^{2-}/Cr^{3+}} = 1.33$$ V, $$E^\circ_{MnO_4^-/Mn^{2+}} = 1.51$$ V
The correct order of reducing power of the species (Cr, Cr$$^{3+}$$, Mn$$^{2+}$$ and Cl$$^-$$) will be:

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 46

The rate constant of a zero order reaction is $$2.0 \times 10^{-2}$$ mol L$$^{-1}$$ s$$^{-1}$$. If the concentration of the reactant after 25 seconds is 0.5M. What is the initial concentration?

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 47

Smoke is an example of:

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 48

Which has trigonal bipyramidal shape?

NTA JEE Main 23rd April 2013 Online - Chemistry - Question 49

When a small amount of KMnO$$_4$$ is added to concentrated H$$_2$$SO$$_4$$, a green oily compound is obtained which is highly explosive in nature. Compound may be :